23531155251043 has 4 divisors (see below), whose sum is σ = 25670351182968. Its totient is φ = 21391959319120.

The previous prime is 23531155251029. The next prime is 23531155251049. The reversal of 23531155251043 is 34015255113532.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23531155251043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23531155250987 and 23531155251005.

It is not an unprimeable number, because it can be changed into a prime (23531155251049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1069597965946 + ... + 1069597965967.

It is an arithmetic number, because the mean of its divisors is an integer number (6417587795742).

Almost surely, 2^{23531155251043} is an apocalyptic number.

23531155251043 is a deficient number, since it is larger than the sum of its proper divisors (2139195931925).

23531155251043 is a wasteful number, since it uses less digits than its factorization.

23531155251043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139195931924.

The product of its (nonzero) digits is 270000, while the sum is 40.

The spelling of 23531155251043 in words is "twenty-three trillion, five hundred thirty-one billion, one hundred fifty-five million, two hundred fifty-one thousand, forty-three".